JPH04111250A - Magnetic tape cassette equipment - Google Patents

Abstract

PURPOSE: To attain the reproduction of magnetic tape cassettes having different tape recording references by constituting a device so that connection members of a loading mechanism are assigned to each kind of the magnetic tape cassettes provided with specially formed recessed parts. CONSTITUTION: A pressing roller of the device exerts on the magnetic tape of the cassette 3 by passing through an opening part 9 which is provided on a front wall 8 of the housing 7. On a digital magnetic tape cassette 13, a sliding cover 16 is arranged for covering the openings 9, 10 which are provided on the front wall 17 of cassette for passing the pressing roller and magnetic head. The cassette is furnished with the recessed parts for pulling in two kinds of cassettes, i.e., a reel spindle hole 4 for the analog magnetic tape cassette and a groove 21 for the digital magnetic tape cassette. The magnetic tape cassette device for reproduction is provided with the loading mechanism 27, thereby any of the connection member 32 of analog magnetic tape cassette or the connection member 33 of digital magnetic tape cassette is pushed into the recessed part 4 or 21. Then the connection member is made compact and cooperated with both of the digital cassette and analog cassette without the movement.

Description

[Detailed description of the invention]

[0001]

[Industrial application field]

The present invention provides a magnetic tape cassette device including a deck and a magnetic tape cassette loading mechanism, and one of the loading mechanisms.
The present invention relates to an apparatus comprising a magnetic tape cassette having separate coupling members and recesses that engage with each other to perform additional loading and unloading functions. [0002]

[Conventional technology]

A device comprising a magnetic tape cassette device and magnetic tape cassettes functionally cooperating with each other is known from German Patent No. P 37 19 890.04. The loading mechanism of the device is described in German Patent No. P of the Federal Republic of Germany.
No. 39 04 4831. In said mechanism, the cassette holder is lowered vertically from the ejection plane to the reproduction plane. The cassette holder is configured to play analog magnetic tape cassettes comprising two tape reels that engage the deck's take-up spindle when the cassette is inside the device. The magnetic tape passes longitudinally through a stationary magnetic head that is pressed against the tape. A coupling member is provided which engages the first reel spindle hole when viewed in the insertion direction when the cassette is manually inserted. When the pull-in motor is started, this coupling member pulls the magnetic tape cassette inwardly into the playback position. [0003]

[Problem to be solved by the invention]

The object of the invention is to equip a device of the type defined at the beginning, capable of playing conventional recording magnetic tape cassettes of the same type, with a new magnetic tape cassette capable of playing magnetic tape cassettes having different tape recording standards. . [0004]

[Means to solve the problem]

This purpose is based on the configuration according to the invention, i.e. in order to handle magnetic tape cassettes with different recording standards and housing configurations, a special connecting member of the loading mechanism has a specially configured recess for each of the magnetic tape cassettes. Achieved by composition, assigned to type. Different types of magnetic tape cassettes are handled as each specific type requires. [0005] In another embodiment, the magnetic tape cassette is a first type of magnetic tape cassette having two parallel walls, each of which has a reel spindle engaged by a first coupling mechanism of the loading mechanism. 2. The apparatus of claim 1, wherein the magnetic tape cassettes of different recording standards are provided with two recesses forming holes.
A second type of magnetic tape cassette having two parallel earthen walls, one of said main walls being substantially perforated and provided with another recess, and a loading mechanism having a second recess that engages with the other recess. It is equipped with a connecting member. [0006] In another embodiment, the coupling member for one type of cassette is controlled by the housing portion of said one type of cassette, and the coupling member for said one type of cassette is controlled by the coupling member for said one type of cassette. Pressed into the recess. Thereby there is an interaction between the coupling member of the loading mechanism and the recess of the cassette for one type of cassette, and the configuration of one type of cassette defines the engagement of the coupling member of this type. [0007] In another embodiment, in the case of an apparatus configured for two types of magnetic tape cassettes, the two connecting members used for said cassettes are arranged at the ends of a tumbling bar extending in the insertion direction. , the axis of the tumbling bar is movable by an intermediate member actuated by a loading mechanism. The tumbling bar allows cooperation between the recess of the housing of different types of magnetic tape cassettes and the connecting member. This is because different types of recesses in the magnetic tape cassette are located at different positions. At the end of the ejection, as a result of the upward movement of the tongue 11 tongue bar, the coupling member separates from the inserted cassette and this cassette moves out, regardless of the type of cassette. [0008] In another embodiment, the tumbling bar shaft that moves the tumbling bar is not lowered into a position where the coupling member engages the associated recess until the tumbling bar has substantially reached that position. As a result, the coupling member is pulled along the cassette housing a short distance. [0009] In another embodiment, the first connecting member, located at the front of the tumbling bar viewed in the insertion direction, cooperates with a fourth part in the form of a reel spindle hole of the cassette of the first type, and The second coupling member, located at the rear of the tumbling bar as seen in FIG. , is inserted with said narrow side wall facing the loading mechanism. Therefore, one of the connecting members always comes into contact with the cassette side wall and presses the other connecting member into the recess of the cassette. Engagement with the appropriate recess is automatically controlled by simple movement of the magnetic tape cassette relative to the tumbling bar. When the coupling member engages the recess, the pull-in motor pulls the magnetic tape cassette through the coupling member and into the holder of the loading mechanism. [0010] In another embodiment, the tumbling bar rotates into the guiding contour of the cassette via a linkage an opening pin located in the loading mechanism near the front wall of the cassette, and the tumbling bar rotates into the front wall of the magnetic tape cassette. a lateral protrusion capable of moving a sliding cover which covers the opening in its closed position. A linkage holds the opening pin and acts on a lever rotating on one of the main walls of the calicassette, thereby engaging the opening pin with the guide contour. In a modification of this embodiment, the lever is fork-like and has arms forming a tip that pivots on the main wall of the cassette, one arm having an opening pin (26
) and engages the guiding contour of one main wall during pivoting, while the other arm engages under the other main wall. [0011] The guide contour tumbling bar that has detected the type of cassette inserted into the holder of the loading mechanism is positioned such that the opening pin rotates to expose the front wall of the digital cassette during the engagement movement of the digital cassette. Guaranteed to come. When the analog cassette is inserted, it remains outside the magnetic tape cassette, and the analog cassette, which does not have the guiding contour of the sliding cover, can pass freely through the pin. [0012] The coupling portion of the fork-like lever is vertically pivotable in front of the front wall of the cassette to engage the arm of the fork-like lever on the main surface of the cassette. Another advantage of the fork-like arrangement is that one arm can reliably guide the opening pin in the guide contour. It is prevented from being released from the guiding contour by the other lever arm. The other arm is
It engages the other major surface of the cassette and does not allow movement of the magnetic tape cassette due to errors. The opening pin therefore remains in the guide contour as long as the cassette is inside. [0013] In another embodiment, the linkage is formed by a wire spring, and the plate from which the opening pin and the further guide pin project is moved by the wire spring, and the opening pin is moved by the wire spring into the guide contour of the upper main wall. engage. [0014] The invention further relates to a magnetic tape cassette for use in the apparatus according to the invention. The magnetic tape cassette comprises magnetic tape wound on two coplanar reels of a housing having two flat, parallel main walls, one of said main walls being connected to the two reel drives of the device. It has two reel spindle holes for the passage of the shaft, and the main wall is crossed by a transverse wall, one of which has a central opening for the passage of the magnetic head and a presser roller for the passage of the presser roller of the device. a substantially imperforate earthen wall forming a cassette front wall having an opening, the cassette having a sliding cover movable between a closed position in which the opening is covered and an open position in which said opening is exposed; The center of the groove is located at the same distance from the cassette front wall as the center of the reel spindle hole, and the groove extends orthogonally to the cassette front wall and is located in the main wall near the narrow side wall. By locating the groove at the same distance to the cassette front wall as the reel spindle hole, the connecting member is compact and can work with both digital and analog cassettes without the need for movement. Hereinafter, the present invention will be explained in more detail based on examples and with reference to the accompanying drawings. [0015]

【Example】

FIG. 1 shows a magnetic tape cassette 3 with magnetic tape on a reel 4 shown in broken lines. The magnetic tape reel 4 is wound around a reel hub 5 in which a reel spindle of a playback device (not shown) passes through a reel spindle hole 6 of a cassette housing 7 and is engaged therein. Parallel upper part (7
a) and a lower (7b) front wall 8 of the housing 7 with a main wall
There is an opening 9 through which the pressure rollers of the device act on the magnetic tape of the cassette 3 from the outside. When the magnetic tape cassette is used in a device having a loading mechanism, the magnetic tape cassette is exposed from its narrow side wall by arrow 11.
The cassette holder 28 is inserted into the cassette holder 28 in the direction shown. The analog magnetic tape cassette 3 shown in FIG. 1(a) has reel spindle holes 6 in both main walls 7a and 7b. [0016] FIG. 1(b) shows a digital magnetic tape cassette 13 that includes a housing 14 that houses a tape reel 15. As shown in FIG. The magnetic tape reel 15 is wound around a reel hub indicated by a broken line. In the play position, the reel hub 5 engages a reel spindle of a device not shown. The digital magnetic tape cassette 13 has reel spindle holes only in the lower main wall 19 of the parallel main walls 18,19. The magnetic tape cassette shown in FIG. 1(b) is provided with a sliding cover 16 which covers an opening 9.10 provided in the front wall 17 of the cassette for passage of the presser roller and magnetic head. In the position of FIG. 1(b), the sliding cover 16 has an opening 9.
10 in the closed position. The sliding cover 16 is U-shaped and extends across the front wall 17 and overlaps the upper main wall 18 and the lower main wall 19 of the magnetic tape cassette 13. [0017] In the position shown in FIG. 1, the magnetic tape cassette 13 is inserted into a cassette holder of a device that includes a loading mechanism. The cassette is inserted through the narrow side wall 20 in the direction indicated by arrow 11. A groove 21 is formed in the upper main wall of the cassette housing near the side wall 20 . The guide contour 22 is
It is located in the area of the front wall 17 and the upper main wall 18. Figure 1b
In the closed position of the sliding cover 16 shown in FIG.
The lead-in part, which is partially covered and comprises part of the guiding edge, remains free. The guide edge 24 projects from a guide surface 25 which cooperates with an opening pin 26 shown in FIGS. 4 and 5. [0018] The magnetic tape cassette device for playback is capable of playing both magnetic tape cassettes of the type shown in FIGS. 1 a and 1 b and includes a loading mechanism 27 . FIG. 2a shows a loading mechanism 2 with a virtual magnetic tape cassette inserted into a cassette holder 28.
7 is shown. The cassette has a recess for drawing both types of cassettes. For analog magnetic tape cassettes this is the reel spindle hole 4, and for digital magnetic tape cassettes this is the groove 21 near the narrow side wall 21. The tamping bar 30 is supported on the upper side of the cassette holder 28 by a tumbling bar shaft 29. The tamping bar extends in the insertion direction of the magnetic tape cassette 3/13 and, when viewed from the front part 31 of the device, provides an analog magnetic tape cassette connection member 32 and a digital magnetic tape cassette connection member deep inside the device. It is equipped with 33. Either the analog magnetic tape cassette connecting member 32 or the digital magnetic chief cassette connecting member 33 can be pushed into the recess 4 (reel spindle hole) or 21 (connecting member groove 21). [0019] The top wall 28a of the cassette holder 28 is shown in Figure 3a. The upper wall 28a has a ramp portion 28b that connects to a raised portion 28d of the step remote from the cassette at a portion 28c where the cassette abuts the upper wall 28a. The slot 28e extends through the ramp portion 28b in the insertion direction of the cassette. The tumbling bar shaft 29 is connected to an upper wall 28a of the cassette holder 28 that intersects with the insertion direction.
Guided above. The tumbling bar axis is shown in Figure 3b.
It is guided by a bracket-shaped intermediate member 34 shown in FIG. The intermediate member 34 has two legs 34a, 34b which are interconnected by a front base 34c when viewed in the insertion direction. The distance between legs 34a, 34b is selected such that intermediate member 34 is longitudinally movable within the slot of cassette holder 28. Toward the front part 31 of the device, the legs 34a, 34b terminate in head parts 34d, 34e in which a longitudinal guide slot 35 is formed. The tumbling bar shaft 29 moves up and down within the guide slot 35. The base 34c is connected to the hole 3 of the pull-in lever 38 of the loading mechanism.
It holds an actuating pin 36 that engages with 7. Intermediate member 3
The lower side of 4 holds a sliding pawl 39. The cover plate 40 is disposed on the upper wall 28a of the cassette holder 28 to prevent the intermediate member 34 from separating from the thrower 28e. [0020] The pull-in lever 38 is shown in FIG.
Move the intermediate member 34 towards the front wall 31 in the position shown in a. As a result, the tamp ring par 30 comes out of the cassette holder interior 41 and the cassette 3/13 is removed from the loading mechanism 27 and becomes free. FIG. 2b shows the analog magnetic tape cassette 3 inserted into the cassette holder 28. As shown in FIG. The side wall 12 of the magnetic tape cassette 3 abuts the sliding pawl 39, and the magnetic tape cassette 3 is moved toward the intermediate member 34 in the pull-in direction (arrow 11).
move. The tumbling bar shaft 29 is connected to the ramp portion 28
Part 28 of the cassette holder that descends from b and comes into contact with the cassette.
Climb to c. A tamp ring parr 30 is in range to engage the cassette. The digital magnetic tape cassette connecting member 33 contacts the upper main wall 7a of the cassette 3, and pushes the analog magnetic tape cassette connecting member 32 into the reel spindle hole 6. The pull-in lever 38 is connected to the operating pin 3
6 in the direction indicated by arrow 11, a motor (not shown) for electric loading is started. The analog magnetic tape cassette connecting member 32 draws the magnetic tape cassette further inward through the reel spindle hole 6. The starting position is shown in Figure 2a. There, the intermediate member 34 moves towards the cassette front 31 and the tumbling bar shaft 29 moves towards the cassette holder 2.
It is located at the high part 28d of the step No.8. If a digital magnetic tape cassette 13 has been inserted, the first narrow side wall 20 has a sliding pawl 3 in the pull-in direction 11.
Move 9. The tumbling bar shaft 29 moves from the stepped portion 28d into the cassette holder portion 28c. The tampling parser 30 is brought into cooperation with the cassette 13. The analog magnetic tape cassette connecting member 32 contacts the upper main wall 18 of the digital magnetic tape cassette 13 and connects the digital magnetic tape cassette connecting member 33 to the groove 2.
Push it into 1. The pull-in lever 38 is moved in the direction of arrow 11 and the pull-in motor is started. The pull-in lever 38 moves the intermediate member 34 and moves the digital magnetic tape cassette 13 via the actuation pin 36. The digital magnetic tape cassette thus reaches the playback position. [0022] The position of the ramp portion 28b is selected such that the tumbling bar shaft 29 cannot move from the cassette holder portion 28d to the lower cassette holder portion 28C until the coupling member reaches the vicinity of the recess 6 or 21 during the pull-in movement. do. As a result, the connecting member moves a short distance and the upper main wall 7
a, the stress is reduced to a minimum. The rotational movement of the tamp ring par 30 is caused by the type of magnetic chief cassette drawn in by the loading mechanism being an analog magnetic tape cassette 3 or a digital magnetic tape cassette 1.
3 is shown. This support can be used to initiate movement of the sliding cover 16 into the open position. [0023] To actuate the sliding cover 16, a pivot lever 43 shown in FIG. 4 is used. The rotating lever 43 rotates around a rotating shaft 44. The two-arm rotation lever holds a release pin 26 in one arm 43a and has an actuation pin 45 in a rear arm extension 43c. Extension portion 43c extends along arm 43a on the other side of shaft 44. Arm 43a and lower arm 43b pivot to engage over upper main wall 18 and lower main wall 19 of the digital magnetic tape cassette. During playback of analog magnetic tape cassettes, the open pin 26 constitutes an obstacle. In the state shown in FIG. 4, the pivot lever 43 is pivoted so that the arm 43a and the extension portion 43c are located outside the path of the cassette to be inserted. In this position of the pivot lever 43, the analog magnetic tape cassette 3 can be moved past the pivot lever 43 into the playback position. [0024] The situation is different for digital magnetic tape cassette 13. This is because the sliding cover 16 needs to be moved in the direction of arrow 46. The pivoting lever 43 pivots around an axis 44 and rotates the guide contour 22 with arms 43a and 43b.
engage with. The position shown in FIG. 5 is the end position in which the sliding cover 16 has been completely moved aside. As the pivoting lever 43 pivots, starting at the introduction part 23, the sliding cover 16 is pushed. At this moment, the sliding cover edge abuts the stop edge 47 of the sliding cover guide. As the cassette 13 is moved further inwardly, the opening pin 26 moves past the guide contour 22 until it engages the sliding cover 16 behind the locking end 48 in the end position shown in FIG. move. In this position, the sliding cover 16 is locked in the open position. During the rotation of the rotation lever 43, the arm 43a is rotated under the lower main wall 19 of the analog magnetic tape cassette 13. The cassette is located between the two arms 43a and 43b, and the engagement depth of the pin 26 of the guide contour 22 is precisely defined. This prevents the pin from slipping out of the guide contour 22 inadvertently. [0025] The rotational movement is transmitted by the linkage. Linkage 49a is formed as a resilient plastic L-shaped member having arms 49a and 49b. The arm end 49a is
The cassette holder 28 can be rotated around a rotation axis 50. A jaw 52 at the end of arm 49b engages actuation pin 45. The tamp ringer 30 holds a protrusion 53 on the analog magnetic tape cassette connecting member 32. When the analog magnetic tape cassette connecting member 32 of the tamp ring par 30 is in a position where it engages with the reel spindle hole 6 when the analog magnetic tape cassette 3 is inserted, the protrusion 53 allows the intermediate member 34 to be pulled in as shown by the arrow 11. does not abut the control edge 51 when moved in the direction. This is because the protrusion is located too deep. The protrusion 53 is connected to the link mechanism 4
It passes under the arm 49a of No.9. The tension between the arms 49a, 49b causes the pivoting lever 43 to occupy the position shown in FIG. 4, ie out of engagement with the cassette. The link mechanism 49 engages with the stop portion 49a. Instead of the arms 49a, 49b being pulled together, a tension spring 4 drives the linkage 49 counterclockwise around the pivot axis 50.
9d can also be used. When inserting a digital magnetic tape cassette and pushing the digital magnetic tape cassette connecting member 33 into the groove 21, the protrusion 53 moves upward and engages the control edge 51. This is because during the insertion movement, the protrusion 53 presses the lever arm 49 from position A for analog playback to B for digital playback. The pivoting lever 43 pivots clockwise and the opening pin 26 engages the guide contour 22 while the elastic linkage 49 is pretensioned;
It means that. [0026] In FIG. 7, the cassette holder 128 accommodates the analog magnetic tape cassette 3. Similar to FIG. 6, there is a protrusion 53 located on the wire spring 131 with two limbs, that is, in the working range of the wire spring 131. The wire spring 131 pivots about an axis 133 and its rim has an end 135, 139 pointing away from the axis 133. One free end 135 of the wire spring 131 is inserted into the recess 13 of the loading mechanism.
7. The other free end 139 of the wire spring 131 is
It rotates around the pin 26 fixed to the plate 141 and engages with it. Plate 141 holds guide pin 143. In Figure 7 the pin 26.143 extends perpendicular to the plane of the drawing. [0027] The cassette holder 128 has a recess 145 and the plate 14
1 enters the recess when pressed by the line spring 131 when no external load is applied. When inserting an analog magnetic tape cassette, the protrusion 5
3 passes through the wire spring 131 and does not act on it. This means that the wire spring 131 does not drive the plate 141 into the recess 145, but the front wall 8 of the magnetic tape cassette 3 passes past the plate. FIG. 8 shows the cassette holder 128 when it accommodates the digital magnetic tape cassette 13. When the digital magnetic tape cassette 13 is deeply inserted into the cassette holder 128, the protrusion 53 descends into the working range of the wire spring 131 as in FIG. The protrusion 53 is
Press the wire spring 131 and drive the wire spring 131 clockwise around the shaft 133. As a result, the wire spring end 139 pulls and presses the plate 141 against the front wall 17 of the cassette. [0028] FIG. 9 shows how the guiding contour 22 reaches the position facing the plate 141 when the cassette is deeply inserted. The plate can engage the guide contour 22. When the cassette 13 is further inserted, the plate 141 will be guided by the guide contour 2.
Enter 2. As a result, the guide pin 26 is moving the sliding cover 16 to the left. The sound head path and pressure roller are exposed. [0029] FIG. 10 shows an embodiment of a cassette according to the present invention. Cassette 201 comprises a housing having two main walls 203 interconnected by a transverse wall. One transverse wall is
It constitutes a cassette front wall 205. The cassette front wall 205 has a central opening 206 and on each side thereof hold-down roller openings 205,206 extending into the main wall. The main wall 203 is provided with passages 209, 210 for the passage of the locating pins of the device. When the cassette is placed in the device, the capstan of the device, in addition to the hold-down roller, engages the hold-down roller aperture. The cassette has a sliding cover 212 with a main part 213,214. The sliding cover 212 has a sliding cover front wall 216 extending along the main wall 203 of the housing 202 and the cassette front wall 205.
overlaps with The sliding cover front wall 216 has a central front wall 217 and lateral front walls 220, 221 on opposite sides of said central front wall. The main part 213 of the sliding cover 212 is connected to the cover part 222. to close the reel spindle hole in the main wall of the cassette in the closed position.
It has 223. The main portion 213 has a recess 224 that exposes one of the reel spindle holes in the open position. Positioning hole 209.21
Passages 225, 226 are connected to main portion 213 to expose
is formed. The main part 213 has a bent part 228 which functions as a guide element for guiding the sliding cover during movement. FIG. 11 shows the assembled cassette 201. Sliding cover 212 is in the closed position. In the closed position,
The front opening of the sliding cover faces the non-perforated portion 230 of the cassette front wall 205 and faces the non-perforated portion 232 of the sliding cover front wall 216.
faces the opening in the cassette front wall 205. Portions 234 and 236 of the cassette front wall 205 and the main wall 203 are recessed portions, respectively. The sliding cover 212 is located in these recesses, and the outside of the sliding cover 212 is connected to the housing 2.02.
It is flush with the non-concave part of. The main wall 203 has a label recess. It is desirable to make the label dimensions as long as possible. Therefore, the main wall 214 of the sliding cover 212 is as small as possible. The main portion 214 does not extend more than half the distance between the cassette front wall 205 and the center of the reel. This distance is equal to the distance between the sliding cover front wall 216 and the center of the recess 224 in the main part 213 of the sliding cover. [0030] FIG. 12 shows the sliding cover 212 in the closed position, and FIG. 13 shows the sliding cover 212 in the closed position.
The sliding cover 212 is shown in the open position. The main part 213 of the sliding cover is located in the recess 242 of the main wall 240 of the zinc 202. The guides 228, 229 engage in guide grooves 244 in the main wall 240 of the cassette. In the closed position (FIG. 12), reel spindle hole 246.
248 is covered by cover portions 222,223. Recess 224, passage 225, 226, front opening 218, 219
faces the unperforated portion of the cassette housing 202. In the open position (FIG. 13), the recess 224 faces the reel spindle hole 248 and faces the other reel spindle hole 24.
6 is located near the sliding cover 212. Passage 225.
226 is exposed in the locating hole 250.252 and in a portion of the main wall 254.256 around the locating hole. part 2
54.256 serves as a support surface that cooperates with the support surface of the locating pin of the hole. The front opening 218 of the sliding cover is
Exposed in the hold-down roller opening 207 of the housing, another hold-down roller opening 208 is located beside the sliding cover in its open position, so that the magnetic tape 258 cooperates with known tape feeding means of the device. . To ensure that the sliding cover 212 has a stable closed position, the cassette 2
01 is equipped with a pressing means 257 for pressing the sliding cover 212 back from the open position (FIG. 13) to the closed position (FIG. 12). These pressing means include two spring legs 257a,
A resilient means in the form of a spring 257 with 257b is provided. One spring leg 257a acts on the guide part 228 of the sliding cover, and the other spring leg 257b acts on the hole 25 of the main wall 240.
9 and is immovable relative to the housing 202. [0031] A recess in the form of a groove 211 is present in the main wall 203 of the housing 202. The distance between the center 211a of the groove and the cassette front wall 205 (see FIG. 10) is equal to the distance d between the center 248a of the reel spindle hole 248 and the cassette front wall 205 (see FIG. 13). Thereby, the connecting member can be made compact. Furthermore, this eliminates the need to move the connecting member to cooperate with an analog magnetic tape cassette as well as a digital magnetic tape cassette.

[Brief explanation of drawings]

Figure 1(a) shows an analog audio magnetic tape cassette, Figure 1(b) shows a digital audio magnetic tape cassette, and Figure 1(C) shows the magnetic tape cassette of Figure 1(b). The front part of the is shown. FIG. 2(a) shows a loading mechanism for both analog and digital magnetic tape cassettes, FIG. 2(b) shows a loading mechanism after loading an analog magnetic tape cassette, and FIG. (C) shows the loading mechanism after insertion of the digital magnetic tape cassette.

FIG. 3(a) shows parts of the loading mechanism of FIGS. 2(a) to (C), and FIG. 3(b) shows parts of the loading mechanism of FIGS. 2(a) to (C). shows.

[Figure 4] Figure 4 shows the pivot lever.

FIG. 5 shows a pivot lever engaged with the housing of a digital magnetic tape cassette.

[Figure 6] Figure 6 shows the linkage.

[Figure 7] FIG. 7 shows the loading mechanism and sliding cover moving mechanism.

FIG. 8 also shows a loading mechanism and a sliding cover moving mechanism.

FIG. 9 also shows a loading mechanism and a sliding cover moving mechanism.

Figure 103 Figure 10 shows an embodiment of a digital magnetic tape cassette and its sliding cover. FIG. 11 also shows an embodiment of a digital magnetic tape cassette and its sliding cover.

FIG. 121 FIG. 12 similarly shows an embodiment of a digital magnetic tape cassette and its sliding cover. FIG. 13 also shows an embodiment of a digital magnetic tape cassette and its sliding cover.

[Explanation of symbols]

3 Cassette 6 Recess 7a Main wall 7b Earthen wall 8 Front wall 9 Opening 10 Opening 13 Cassette 16 Sliding cover 17 Front wall 18 Main wall 19 Main wall 21 Recess 22 Guide contour 26 Open bottle 27 Loading mechanism 28a Lamp part 29 Tumbling bar shaft 30 Tampling Parr 32 Connecting member 33 Connecting member 34 Intermediate member 42 Housing part 43 Lever 43a arm 43b arm 49 Link mechanism 53 Lateral protrusion wire spring board guide pin housing main wall transverse wall transverse wall central opening Holder roller opening Holder roller opening groove sliding cover main wall reel spindle hole reel spindle hole Magnetic tape

【Document name】

[Figure 1] drawing

[Figure 3] 8a

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

[Figure 10]

[Figure 11]

[Figure 12] JP 4-111250 (32> [Figure 13]

Claims (14)

[Claims] Claim 1: Deck and magnetic tape cassette loading mechanism (
27) and a magnetic tape cassette device comprising a recess (6) that mutually engages with one coupling member (32) of said loading mechanism (27) to perform another loading and unloading function. In order to handle magnetic tape cassettes (3, 13) with different recording standards and housing configurations, the special connecting members (32, 33) of said loading mechanism are equipped with special A device characterized in that it is assigned to each type of magnetic tape cassette, having a recess (6, 21) configured to Claim 2: A magnetic tape cassette has two parallel main walls (
7a, 7b), each of its main walls forming a reel spindle hole in which the first coupling mechanism (32) of said loading mechanism (27) engages. The device according to claim 1, comprising two recesses (6), wherein the magnetic tape cassette of a different recording standard comprises a second type of magnetic tape cassette (13) having two parallel main walls (18, 19). and one of the main walls is substantially perforated and includes another recess (21), and the loading mechanism (27) is
2. Device according to claim 1, characterized in that it comprises a second coupling member (33) that engages with another recess (21). 3. The connecting member (32, 33) for one type of cassette (3, 13) is controlled by the housing part (42, 18) of said one type of cassette (3, 13); The connection member (32, 33) for the other type of cassette (3, 13) connects the one type of cassette (3).
, 13), the device according to claim 1 or 2, characterized in that it is pressed into the recess (6, 21) of the device. Claim 4: Two types of magnetic tape cassettes (3, 1
3), the two connecting members (32, 33) used in said cassette are arranged in the insertion direction (11
), the tumbling bar shaft (2) of the tumbling bar (30)
9) is an intermediate member (
4. Device according to claim 3, characterized in that it is movable by 34). 5. The intermediate member (34) includes a cassette (3, 13
) is inserted, the tumbling bar (30) is pulled in through the tumbling bar shaft (29), and the cassette (
When the cassette (3, 13) is moved out, the tumbling bar shaft (29) runs up the ramp section (28b) and during the outward movement of the cassette (3).
, 13).
The device described in. 6. The tumbling bar shaft (29) for moving the tumbling bar (30) is such that the connecting member remains in the associated recess (6) until the tumbling bar (30) reaches approximately that position.
, 21), wherein the device is not lowered into a position in which it engages the device. 7. A first coupling member (32) located at the front of the tumbling bar seen in the insertion direction cooperates with a recess (6) in the form of a reel spindle hole of the first type of cassette (3). The second coupling member (33), which acts and is located at the rear of the tumbling bar when viewed in the insertion direction, connects a second type of cassette (
13), said groove is formed in the vicinity of a narrow side wall (20) of the housing, and the cassette is inserted with said narrow side wall facing the loading mechanism; 5. A device according to claim 4, characterized in that: 8. The tumbling bar (30) is connected to the guide contour (22) of the cassette (13) via a linkage (49).
A lateral protrusion (53) pivots an opening pin (26) located in the loading mechanism near the front wall (17) of the cassette (13).
) of the magnetic tape cassette (13).
5. Device according to claim 4, characterized in that a sliding cover (16) is movable which covers the openings (9, 10) of the ) in its closed position. 9. The link mechanism (49) includes a release pin (26)
and the main walls (18, 19) of the cassette (13)
9. Device according to claim 8, characterized in that it acts on a lever (43) which rotates one of the levers, thereby causing the opening pin (26) to engage the guide contour (22). 10. The lever (43) is fork-shaped and has arms (43a, 43b) forming a tip that rotates the main walls (18, 19) of the cassette (13); 43
a) holds the opening pin (26) and during rotation engages the guiding contour (22) of one main wall (18) and the other arm (
10. Device according to claim 9, characterized in that 43b) engages under the other main wall (19). 11. The link mechanism (49) includes a wire spring (131
), an opening pin (26) and another guide pin (
9. Claim 8, characterized in that the plate (141) from which the protruding plate (143) is moved by a wire spring, and the opening pin (26) engages in a guide contour (22) of the upper main wall (18). The device described. 12. A magnetic tape cassette device for use in the device according to any one of claims 1 to 11. 13. A second type of magnetic tape cassette for use in the apparatus according to any one of claims 1 to 11. Claim 14: Two flat parallel main walls (203, 24
2 in the same plane of the housing (202) with 0)
One of the main walls (240) has two reel spindle holes (246, 24) for the passage of the two reel drive shafts of the device.
8), and the main wall (203, 240) has a transverse wall (20
4, 205), one of the transverse walls having a central opening (206) for the passage of the magnetic head and a hold-down roller opening (207, 2) for the passage of the hold-down roller of the device.
08), the cassette having a sliding cover (212) movable between a closed position in which the opening is covered and an open position in which said opening is exposed.
) in the main wall (203) with substantially no holes (211)
The center (211a) of the reel spindle hole (246,
248) center (248a) and the cassette front wall (205)
at the same distance (c, d) from the cassette front wall (205), the groove (211) extends orthogonally to the cassette front wall (205) and narrow side wall (20
14. The device according to claim 13, characterized in that it is located on the main wall (203) in the vicinity of 4).